In what has been a milestone season for the 29-year-old, the Real Madrid forward has already collected his second Champions League winners’ medal having earlier been voted World Player of the Year.
He now turns his attention to taking on the Germans in the opening match of Group G in Salvador on Monday.
Ronaldo says: "If you look at the last few years, they have all been similar years, so they have all been the best of my career.
"But I feel I am in the best moment of my career and I want to continue that moment and enjoy it.
"I want to be champion but let's take it a step at a time. This is a different tournament to 2006 and 2010. There are many new players but only at the end will we know.
"But we have many good players and I believe we will have a good World Cup."
As for his recent knee and thigh injuries, Ronaldo adds: "The problems are all in the past.
"If I feel something, and I am sure I won't feel anything during the game, I will not risk my career. I come first and not football.
"Since the start of my career there's not been one single day in which I've played without pain. It's just the burden of my work.
"I'm ready, I'm feeling well. I don't have anything to prove. One player is not a team, I can't carry the whole team on my back.
"Look at my statistics and CV – I have nothing to prove. My career has been great so far and I just want to continue."
And Germany coach Joachim Low has given his side a clean bill of health ahead of the mouth-watering contest: "We can go into the tournament positively as all of the players have come through our final training session fully and so we can assume that all of them will be 100 per-cent ready to play.”